Lubec, Maine has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 36.7 °F (low) to 51.6 °F (high). Annual precipitation averages 47.7 Inches. Lubec is located in USDA Plant Hardiness Zone 6a. The growing season typically runs from the last frost around Apr. 21 - Apr. 30 through the first frost around Oct. 21 - Oct. 31.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 15.2 °F | 31.0 °F | 4.05 in. |
| February | 16.5 °F | 31.9 °F | 3.33 in. |
| March | 24.4 °F | 37.9 °F | 4.12 in. |
| April | 34.3 °F | 47.4 °F | 4.05 in. |
| May | 42.0 °F | 56.7 °F | 3.61 in. |
| June | 48.7 °F | 65.8 °F | 4.04 in. |
| July | 53.3 °F | 71.1 °F | 2.97 in. |
| August | 54.9 °F | 71.7 °F | 3.24 in. |
| September | 50.9 °F | 66.0 °F | 3.79 in. |
| October | 42.5 °F | 56.0 °F | 5.0 in. |
| November | 33.7 °F | 46.2 °F | 4.52 in. |
| December | 23.4 °F | 37.4 °F | 5.0 in. |
| Annual | 36.7 °F | 51.6 °F | 47.72 in. |
| Average First Frost Date | Oct. 21 - Oct. 31 |
| Average Last Frost Date | Apr. 21 - Apr. 30 |
| Average Days With Frost | 125-150 Days |
| Plant Hardiness Zone | Zone 6a : -10°F to -5°F |
| Plant Hardiness Zone - 2012 | Zone 6a : -10°F to -5°F |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Dfb - Humid Continental Mild Summer, Wet All Year |